Finding the Fourth Proportional to 139,160.03, 208,751.31 and 39,321.05

Step by Step Solution

1. Step 1: Write the proportion equation
   139,160.03 : 208,751.31 = 39,321.05 : x
2. Step 2: Convert to fraction form
   139,160.03/208,751.31 = 39,321.05/x
3. Step 3: Cross multiply
   139,160.03x = 208,751.31 × 39,321.05
4. Step 4: Simplify right side
   139,160.03x = 8,208,319,654.32
5. Step 5: Solve for x
   x = 8,208,319,654.32/139,160.03
6. Step 6: Final answer
   x = 58,984.75